唉，美国5号高速桥梁崩塌

[reine02]

Motorists warned to avoid Washington bridge collapse area
Man ‘lucky to be alive’ after Washington bridge collapse

 

[向问天]

豆腐渣

 

[ccc]

查腐败。

 

[一心无住]

又给美粉添堵了。

 

[泰迪宝贝]

也是超重惹的祸？

 

[冷笑99声]

不是说有地震吗?

啦 ?

 

[heureux]

真的是 5 号高速上的？

 

[ccc]

真的是 5 号高速上的？

I 5

幸运的是河水不深。

 

[Anakin]

 

[urus]

美帝的基建已经快到期了， 需要大规模的重建或者修补。

 

[pattern]

查恐怖分子。

 

[Adenine]

美帝要完蛋了
还是社会主义好

 

[ccc]

Bridge built in 1955

The bridge was not classified as structurally deficient, but a Federal Highway Administration database listed it as being "functionally obsolete" — a category meaning that the design is outdated, such as having narrow shoulders and low clearance underneath.
The bridge was built in 1955 and has a sufficiency rating of 57.4 out of 100, according to federal records. That is well below the statewide average rating of 80, according to an Associated Press analysis of federal data, but 759 bridges in the state have a lower sufficiency score.
According to a 2012 Skagit County Public Works Department report, 42 of the county's 108 bridges are 50 years or older. The document says eight of the bridges are more than 70 years old and two are over 80.
Washington state was given a C in the American Society of Civil Engineers' 2013 infrastructure report card and a C- when it came to the state's bridges. The group said more than a quarter of Washington's 7,840 bridges are considered structurally deficient or functionally obsolete.

 

[stevenw]

水泥建筑只有40年左右的稳定期，其后强度下降很快。

 

[stevenw]

70年后强度下降到原初50%左右（30年前的资料）。